From d518ac45f5b8a268101fd7ce4a7c8960b663fe02 Mon Sep 17 00:00:00 2001
From: grossmj <grossmj@gns3.net>
Date: Mon, 8 Jun 2015 14:51:06 -0600
Subject: [PATCH] Enable KVM acceleration option.

---
 gns3server/modules/qemu/qemu_vm.py | 27 +++++++++++++++++++++++++++
 gns3server/schemas/qemu.py         | 14 +++++++++++++-
 2 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/gns3server/modules/qemu/qemu_vm.py b/gns3server/modules/qemu/qemu_vm.py
index bea80f74..69aea17e 100644
--- a/gns3server/modules/qemu/qemu_vm.py
+++ b/gns3server/modules/qemu/qemu_vm.py
@@ -84,6 +84,7 @@ class QemuVM(BaseVM):
         self._kernel_image = ""
         self._kernel_command_line = ""
         self._legacy_networking = False
+        self._kvm = True
         self._acpi_shutdown = False
         self._cpu_throttling = 0  # means no CPU throttling
         self._process_priority = "low"
@@ -354,6 +355,30 @@ class QemuVM(BaseVM):
             log.info('QEMU VM "{name}" [{id}] has disabled ACPI shutdown'.format(name=self._name, id=self._id))
         self._acpi_shutdown = acpi_shutdown
 
+    @property
+    def kvm(self):
+        """
+        Returns either this QEMU VM uses KVM acceleration.
+
+        :returns: boolean
+        """
+
+        return self._kvm
+
+    @kvm.setter
+    def kvm(self, kvm):
+        """
+        Sets either this QEMU VM uses KVM acceleration.
+
+        :param kvm: boolean
+        """
+
+        if kvm:
+            log.info('QEMU VM "{name}" [{id}] has enabled KVM acceleration'.format(name=self._name, id=self._id))
+        else:
+            log.info('QEMU VM "{name}" [{id}] has disabled KVM acceleration'.format(name=self._name, id=self._id))
+        self._kvm = kvm
+
     @property
     def cpu_throttling(self):
         """
@@ -1127,6 +1152,8 @@ class QemuVM(BaseVM):
         command = [self.qemu_path]
         command.extend(["-name", self._name])
         command.extend(["-m", str(self._ram)])
+        if sys.platform.startswith("linux") and self._kvm:
+            command.extend(["-enable-kvm"])
         disk_options = yield from self._disk_options()
         command.extend(disk_options)
         command.extend(self._linux_boot_options())
diff --git a/gns3server/schemas/qemu.py b/gns3server/schemas/qemu.py
index f4f97685..45a6dce7 100644
--- a/gns3server/schemas/qemu.py
+++ b/gns3server/schemas/qemu.py
@@ -104,6 +104,10 @@ QEMU_CREATE_SCHEMA = {
             "description": "ACPI shutdown support",
             "type": ["boolean", "null"],
         },
+        "kvm": {
+            "description": "KVM support",
+            "type": ["boolean", "null"],
+        },
         "cpu_throttling": {
             "description": "Percentage of CPU allowed for QEMU",
             "minimum": 0,
@@ -207,6 +211,10 @@ QEMU_UPDATE_SCHEMA = {
             "description": "ACPI shutdown support",
             "type": ["boolean", "null"],
         },
+        "kvm": {
+            "description": "KVM support",
+            "type": ["boolean", "null"],
+        },
         "cpu_throttling": {
             "description": "Percentage of CPU allowed for QEMU",
             "minimum": 0,
@@ -319,6 +327,10 @@ QEMU_OBJECT_SCHEMA = {
             "description": "ACPI shutdown support",
             "type": "boolean",
         },
+        "kvm": {
+            "description": "KVM support",
+            "type": ["boolean", "null"],
+        },
         "cpu_throttling": {
             "description": "Percentage of CPU allowed for QEMU",
             "minimum": 0,
@@ -342,7 +354,7 @@ QEMU_OBJECT_SCHEMA = {
     "additionalProperties": False,
     "required": ["vm_id", "project_id", "name", "qemu_path", "hda_disk_image", "hdb_disk_image",
                  "hdc_disk_image", "hdd_disk_image", "ram", "adapters", "adapter_type", "mac_address", "console",
-                 "initrd", "kernel_image", "kernel_command_line", "legacy_networking", "acpi_shutdown",
+                 "initrd", "kernel_image", "kernel_command_line", "legacy_networking", "acpi_shutdown", "kvm",
                  "cpu_throttling", "process_priority", "options"]
 }